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M4A音频文件转换为MP3或WAV

[英]M4A audio files conversion to MP3 or WAV

I have developed a native IOS app for doctors who dictate their report. 我为命令其报告的医生开发了本机IOS应用程序。 currently the audio files are available in m4a format. 当前,音频文件以m4a格式提供。 However on our servers accepts mp3 or wav audio files. 但是,在我们的服务器上,可以接受mp3或wav音频文件。 What would be the best way for me to convert the m4a file within the IOS device before the recording is sent towards the dictation server? 在将录音发送到听写服务器之前,在IOS设备中转换m4a文​​件的最佳方法是什么?

This has been ask a few times before. 这已经问过几次了。 You cannot use Core Audio to record in mp3 format. 您不能使用Core Audio以mp3格式录制。 You can use a library call lame to help encode though. 您可以使用库调用lame来帮助编码。 http://lame.sourceforge.net http://lame.sourceforge.net

Possible duplicate posts: 可能重复的帖子:

If you're familiar with Objective-C, I wrote a small library utilizing lame and JZRecorder a while back. 如果您熟悉Objective-C,我不久前就使用lame和JZRecorder编写了一个小型库。 DCAudioRecord DCAudioRecord

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